FIX: make sure we check the kerning on the correct (parent) font

tacaswell · tacaswell · commit 32582bb82cb1 · 2022-08-09T17:26:02.000-04:00
diff --git a/lib/matplotlib/_text_helpers.py b/lib/matplotlib/_text_helpers.py
@@ -63,8 +63,10 @@ def layout(string, font, *, kern_mode=KERNING_DEFAULT):
         # This has done the fallback logic
         font = char_to_font.get(char, base_font)
         glyph_idx = font.get_char_index(ord(char))
-        kern = (font.get_kerning(prev_glyph_idx, glyph_idx, kern_mode) / 64
-                if prev_glyph_idx is not None else 0.)
+        kern = (
+            base_font.get_kerning(prev_glyph_idx, glyph_idx, kern_mode) / 64
+            if prev_glyph_idx is not None else 0.
+        )
         x += kern
         glyph = font.load_glyph(glyph_idx, flags=LOAD_NO_HINTING)
         yield LayoutItem(font, char, glyph_idx, x, kern)
